KMT AP Chemistry

At what temperature do nitrogen molecules move fastest?

• 350 K
• 300 K
• 250 K
• 200 K

Pressure is caused by ______.

• gravity.
• gas molecules colliding with each other.
• gas molecules colliding with surfaces of the container.
• gas molecules reacting with each other.

Tags

NGSS.HS-PS2-1

What happen to the energy of the system when the molecules collide with each other?

• Energy increases
• Energy decreases
• Energy remains the same

Tags

NGSS.HS-PS1-5

Gas molecules can easily be compressed  because ___________. 

• gas molecules are soft
• gas molecules are far apart
• gas molecules follow the shape of the container

The theory that states that all particles in matter are constantly moving; helps to describe the phases of matter

• behavior of gases
• kinetic theory 
• matter matters
• temperature 

Tags

NGSS.MS-PS1-4

The higher the average kinetic energy the __________________ 

• the higher the volume
• the higher the mass
• the higher the temperature
• the higher the density

Tags

NGSS.HS-PS3-2

How do gas molecules move? 

• in an orderly fashion 
• constantly and randomly
• in straight line paths
• in a circular motion

Tags

NGSS.MS-PS1-4

Gases are described as having a 

• definite shape and indefinite volume
• indefinite shape and indefinite volume
• definite shape and definite volume
• indefinite shape and definite volume

Collisions between gas particles are said to be "elastic" because _________________________.

• they have a stretchy waistband
• kinetic energy is lost between particles
• kinetic energy is not lost between particles and is instead transferred
• particles move in a straight line

Tags

NGSS.HS-PS2-3

Which of the following explains why gases are less dense than solids?

• Gases have faster moving particles that are very close together.
• Gases have slow moving particles that are very close together.
• Gases have faster moving particles that are far apart.
• Gases have slow moving particles that are close together.

Tags

NGSS.HS-PS3-2